Merge pull request #312982 from v-ganeshk/ganeshk20260310releasenotes

Added realease notes for march 26

Author: prmerger-automator[bot]

articles/healthcare-apis/azure-api-for-fhir/release-notes-2026.md

@@ -19,6 +19,15 @@ ms.author: evach
 
 Azure API for FHIR® provides a fully managed deployment of the Microsoft FHIR Server for Azure. The server is an implementation of the [FHIR](https://hl7.org/fhir) standard. This document provides details about the features and enhancements made to Azure API for FHIR.
 
+## March 2026
+### FHIR service
+
+**Bulk Export cancellation behavior update**: Added updates to align the FHIR server to support [Bulk Data Access 2.0](https://hl7.org/fhir/uv/bulkdata/STU2/export.html#bulk-data-delete-request). This includes a change to bulk export cancellation behavior. Previously, cancellation request of an already completed, cancelled, or failed export job returned "200 OK." The behavior is now updated to return more informative operation outcomes:
+  - Cancelling an already-cancelled export job returns "404 Job Not Found."
+  - Cancelling a completed or failed export job returns "404 Job Not Found" if the job has already been cancelled or failed; otherwise returns "202 Accepted."
+  - Cancelling a queued or running export job returns "202 Accepted"; no behavior change.
+  - Trying to get the status of a user-requested cancelled job returns "404 Job Not Found."
+
 ## February 2026
 ### FHIR service
 

articles/healthcare-apis/release-notes-2026.md

@@ -22,6 +22,12 @@ Release notes describe features, enhancements, and bug fixes released in 2026 fo
 
 **Token search behavior update**: After 2 March 2026, the Azure FHIR service was updated so that token values longer than 128 characters are no longer truncated during indexing. If your workspace is affected, you may notice changes in the number of resources returned for token-based queries, along with improved overall query performance. The goal for this update is to improve search behavior accuracy and strengthen service reliability. An Azure service notification was sent to affected accounts with more details.
 
+**Bulk Export cancellation behavior update**: Added updates to align the FHIR server to support [Bulk Data Access 2.0](https://hl7.org/fhir/uv/bulkdata/STU2/export.html#bulk-data-delete-request). This includes a change to bulk export cancellation behavior. Previously, cancellation request of an already completed, cancelled, or failed export job returned "200 OK." The behavior is now updated to return more informative operation outcomes:
+  - Cancelling an already-cancelled export job returns "404 Job Not Found."
+  - Cancelling a completed or failed export job returns "404 Job Not Found" if the job has already been cancelled or failed; otherwise returns "202 Accepted."
+  - Cancelling a queued or running export job returns "202 Accepted"; no behavior change.
+  - Trying to get the status of a user-requested cancelled job returns "404 Job Not Found."
+
 #### Bug fixes:
 
 **Bug fix for `$bulk-delete` with `_remove-references`**: Previously, there was an issue when using `$bulk-delete` with `_remove-references` where the version number wasn't being displayed in the resources after they had their references removed. This issue is fixed.